Heating element



. H. BAETZ HEATING ELEMENT Filed April .'3, 1926 Patented Nov.15, 1927.- y p UNITED sfrAfres HENRY BAETZ, or sapeurs; inissoiiai.k

HEATING ELEMENT.

Application inea April 3.1926. serial No. 99,567.

My invention has relation to improvements in heating elements or radiatorsA and consists in the novel features of construction more fully set forth in the specification and pointed out in the claims.

strength and rigidity. The advantageof providing thefplaits is a great increase in radiating surface within comparatively narrow limits andthe advantage of constructing the element of sheet metal isxthat the cost of manufacture may be kept down in addition to insuring high conductivity and 1 of the radiator, one of saidported enlarge- Vsist of castings.

Alightness as above stated. Further advanf tages are better apparent from a detailed description of the "invention in connection with the accompanying drawings, in which-4` Fig. 1 is aside yelevation of my improved radiator; Fig. 2 is an end elevation thereof; and Figj is a vertical cross section taken on the line 3-3"0f Fig. l; and Fig. 4 is an enlarged sectional detail of 'a fra-gment of the casing showing they seam.

Referring tothe drawings, l represents a sheet metal drum or casing, Athe side Walls of which are plaited as shown at 2, 2 the topV and bottom Walls 3, 3 preferably being plainV surfaces.

ator, the ends of the' sheet ,metalcasingjlp 'are .surrounded by and are castwithin terminal members 4, 4 which themselves con' Each of said terminal` members has cast onto its outer surface an enlargement 5 providedV withfa passageway 6 communicating with a pair of ports 8, 8

in the inner wall4 t of each member 4, said ports leadingfromthe interior` of the casing l.A A threaded nipple 7`is castrinto the outer end of each enlargement 5. In the operation.

ments' servesas a steam inlet while the other will serve as an` outlet for spent steam and water of condensation. In order that' steam under l considerable pressure may be confined within the casing l, the topand bot-` i tom walls of the casing are eachy reinforced and rendered rigid by. aframe comprising bars of Tiron 9 extending the ylength of In the manufacture ofthe radi-f having its side walls plaited and itstop and `bottom walls plain, the extremitiesof said the-walls 3, said walls resting against the T-bar.` rectangular frame ofstrap iron l()` isfcomposed ofside members 11, 11V eX- tending transversely and in contacting relation with the plaits 2, 2` and top and bottom line therein. It will be observed that the nipples 7 V7 are threaded toconnect the radiator `in the steam line so that it isa comparatively simple manner to connect the same for service, no special iittingsbeing required. The edges of the metallic sheet forming the casinglO are preferably joined `by a seam 13 as `shown inF ig. 4. The resulting unitary element that is `,thus `provided is vof greatadvantage as it makes for both simplicity, strength `and durability.

Having described my invention, I claim: l. Aheating element comprising asheet metal casing havingfplaited side walls, suitable terminal members cast over the ezi-` tremities of said casing, one of said terminals being provided with aninlet and the other The number and with an outlet, aj stifening member extend ing longitudinally of the top and Vbottom walls of said casing, vand a reinforcing frame enveloping the casing,fsaid frame having contacting relation with the plaited `wal and With the stiffening members. l

2. *A1 heating element comprising a casing casing` being cast Vinto suitable terminal members, eachy :of said members having a portedenlargement on its outer surface, one

of vwhich serves as an inlet and the other as an outlet and eachof said ports having openings connecting the inlet and the outlet with the interior ofthe casing', a nipple cast` into4 the outer extremity of eachfenlargefment, and a suitable reinforcingframe entremitiesof said casing,oneof`said terminals y beingprovided with van inlet-and the other with "an outlet, a -stiffening' member extend-lk fing longitudinally'of the top. and `bottom Awalls ofsaid casing,and a reinforcing frame of said casing, one of said members being provided with n. passageway for the introduction of :L fluent medium, und u plurality of lateral reinforcing frames enveloping 1f) said heating element in spaced relation.

In testimony whereof I hereunto nlix my signature.

HENRY BAETZ. 

